<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <script src="../Vue/vue.js"></script>
    <title>v-for指令</title>
</head>

<body>

    <div id="app">
        <input type="button" value="添加数据" @click="add">
        <input type="button" value="移除数据" @click="remove">

        <ul>
            <li v-for="(it,index) in arr">
                {{index+1}}黑马程序员：{{it}}
            </li>
        </ul>

        <h2 v-for="item in vegetables" v-bind:title="item.name">
            {{item.name}}
        </h2>
    </div>

</body>

<script>
    let app=new Vue({
        el:"#app",
        data:{
            arr:["北京","上海","广州","深圳"],
            vegetables:[
                {name:"西蓝花炒蛋"},
                {name:"蛋炒西蓝花"}
            ]
        },
        methods: {
            add:function(){
                this.vegetables.push({name:"花菜炒蛋"});
            },
            remove:function(){
                this.vegetables.shift();
            }
        },
    })
</script>

</html>